Pan conveyer for furnaces



Sept. 4il) 1924. y K. M. HENRY PAN coNvEYER Fon Fummcasmed on. .18; ma

Patented Sept. 9, v1924.

;- 'UNITED' 4STATES PATENT OFFICE.

:KENNETH M. HENRY, F SAN FRANCISCO, CALIFORNIA, ASSIGNOR T0 ILLINOIS- PACIFIC GLASS'COMPANY', 0F SAN FRANCISCO, CALIFORNIA, CORPORATION 0F CALIFORNIA.

` IAN coNvEYER Fon. FURNAcFs.

Application '-'led October 18, 1922. Serial No. 595,286.

y To all whom t may concer/n.:

Be it known that I, KENNETH M..IIENRY, a citizen of the United States,.res1ding at 'the city-and county of San Francisco and 5 State of California, have invented new and useful Improvements in Pan Conveyors for Furnaces, of which the following is a specication. .v

- Thisnvention relates to for furnaces.v

In endless conveyers used in heat treating ovens, and particularl glass annealing lehrs,

there is a consider-ab e loss of heat, dueto the circulation of air currents between the slatsof the conveyer. It is theobject of thisinvention to close this space, between the slats to the end that such heat losses shall be overcome.

There are several ways oflcarrying-out this object, three such being-shown in the accompanying drawings, in which- 1 shows a side elevation, partly in section, of a glass annealing leh Fig. 2 shows a. vertical sectional view of one ,end of a pan conveyer embodyingmy invention.

Fig.'3 shows a cross section of the run ofthe conveyer. v

Fig. 4 shows a plan view 'of one ofthe slats. I

Fig. 5- shows a cross .section of a modified form ofv slats.

Fig. 6 shows a cross modification. i By way of lillustrating the invention, I

section of a further show an annealing lehr 10 tted vwith anA endlessconveyer 11. These lehrs are heated atv one end, the other end beingopen for eiecting a gradual cooling of the articles.

As indicated by arrows, cold air enters the lopen end and asses between the slats of the conveyer, an thus gains entrance to the part of the lehr which is heated. Considerable loss of heat results therefrom.

The oonveyer comprises articulated link sections 12, each section being preferabl fitted with a'. roller 13 to ride upon a trac 14 and to co-operate with teeth or notches pan conveyers upper v connecting means between the` 4ing articulated li 15 in the Sprocket when 16. opposite link sections are connected acrossby metal slats 17. Since these slats are required -to pass around the sprocket wheels, they are ordinarily disconnected. However, in the present invention I connect these slats to'- gether ina manner to close the'space between against the admission of air currents.

The preferred way of doing this is shown in Fig. 2, where it will be seen that each slat is in the form-of a channel and one leg is provided with an outwardly curved flange li-S into which the leg of the adjacent slat Another lway of' accomplishing 'this is to provide both legs with inwardly curved ilanges 19 and connect the flanges of adjacent legs together by shown 1n Fi 5.

A third way is to insert a filler 21 between adjacent slats and retain this filler in place by means of pin-s 22 extending into slots 23 shown in Fig. '6.

Various changesin'the construction and arrangement of the several parts herein Having thus described my invention, what I claim and desire to Patent is 1; A p-an conve -er for furnaces comprissections, channel-shaped slats .connecting opposite sections together, connecting means between adjacent slats rmitting articulation and closing the space tween comprising a curved ange formed on a leg of-eachslat. A

2. A pan conveyer for furnaces-comprising articulated link sections, channel-shaped slats connecting opposite'sections together and connecting means between adjacent slats secu-re by Lettersmeans of a clip 20, as

1n the legs of the channel-shaped slats, as

ermitting articulation and closing thespace `4 tween and said connecting means comprising an outwardly'curved ange formed on a e of each slat, the leg of the adjacent Slat` ing seated in said curved ian e.

KENNETH M. HE Y.' 

